Question
$$231-96x+x^2 = 0$$
Answer
$$ \begin{matrix}x_1 = 48-\sqrt{ 2073 } & x_2 = 48+\sqrt{ 2073 } \\[1 em] \end{matrix} $$
Explanation
$$ \begin{aligned} 231-96x+x^2 &= 0&& \text{simplify left side} \\[1 em]x^2-96x+231 &= 0&& \\[1 em] \end{aligned} $$
$ x^{2}-96x+231 = 0 $ is a quadratic equation.
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